The thing is the game/nft tokens are only being valued at what...

The thing is the game/nft tokens are only being valued at what they are worth because they have short term uses (as opposed to meme crypto coins)
These tokens can obviously be used in game and AXS is used to breed Axies creating more value for the user.
For what its worth in the last 24hrs $39M worth of transactions on the Axie marketplace. last 30days $358M so $7.3B market cap seems fine given the flow of money.